Why have you chosen these places - what attracts you to them - or is it because they feature on everyone's itinerary?
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Any recommendations for must-dos in these places?
What sort of things do you like doing? My 'must do' list could be the list from hell for you!
Don't underestimate time taken to get between overnight stops. Driving in Ireland is slow and it will take you a lot longer to cover distances than you might think. If using google maps for working out driving times, it is recommended to add 25% to their times and then add on time for any stops.
With two nights you only effectively get one and a bit full days in a place...